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OpenStudy (anonymous):
Multiply: (8a + 5b) (8a - 5b). Isnt this 64a^2-40ab , yay ( = i think i get it nnow!!
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OpenStudy (anonymous):
yes u are right dear
OpenStudy (anonymous):
Yay ==)))
OpenStudy (anonymous):
yep right on!:D
OpenStudy (anonymous):
well pratu043 said im wrong.
OpenStudy (anonymous):
I'm a little doubtful, shoudn't you use the a^2 - b^2 formula?
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OpenStudy (anonymous):
thats correct...!
OpenStudy (anonymous):
Simplify: (7x + 1) (7x - 1) well this one is 49x^-1
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